Abstract: The invention concerns a piezoelectric resonator (10), intended to be packaged in a case, including a base (12) formed of a first fixing zone (121), a second central mechanical uncoupling zone (122) and a third zone (123) opposite to the first fixing zone. At least two vibrating arms (13a, 13b) extend from said third zone, on each of which at least one groove (141a-144a, 141b-144b) is formed on at least one of the top or bottom faces of the arms. The resonator is characterised in that the base is provided with a hole (15) through the second central mechanical uncoupling zone.

Abstract: The resonator according to the invention, which is intended to be mounted in a case, includes a tuning fork shaped part (42) with two parallel arms (44, 46) connected to each other by a base (48) and carrying electrodes (52, 54) to make them vibrate, these electrodes being connected to connection pads (60, 62) intended to be electrically connected to the exterior of the case. In accordance with the invention, the resonator (40) also includes a central arm (50) attached to the base (48) and located between the arms (44, 46) of the tuning fork shaped part (42), substantially equidistant from them, this central arm (50) having a greater mass than that of the arms of the tuning fork shaped part and the connection pads (60, 62) are carried by this central arm. This resonator (40) is mounted in a case of parallelepiped shape by fixing its central arm (50) to at least one support secured to the bottom of the case.

Abstract: The resonator according to the invention, which is intended to be mounted in a case, includes a tuning fork shaped part (42) with two parallel arms (44, 46) connected to each other by a base (48) and carrying electrodes (52, 54) to make them vibrate, these electrodes being connected to connection pads (60, 62) intended to be electrically connected to the exterior of the case. In accordance with the invention, the resonator (40) also includes a central arm (50) attached to the base (48) and located between the arms (44, 46) of the tuning fork shaped part (42), substantially equidistant from them, this central arm (50) having a greater mass than that of the arms of the tuning fork shaped part and the connection pads (60, 62) are carried by this central arm.

Abstract: Encapsulated piezoelectric resonator including on the one hand a central plate (5) made of a piezoelectric material cut to form a frame (6) and a central resonant element (9) connected to said frame (6), the top and bottom faces having a metal coating, on the other hand bottom (11) and top (16) covers, each being formed by a spacing frame (12, 17) made of metal or a metal alloy and a closing plate (14, 19), characterised in that at least one of the elements (12, 14, 17, 19) forming the covers (11, 16) is electrically connected to the frame (6) of the central plate (5) and has an extension (10, 13, 18, 20) bent into a Z shape to bring its distal portion (10a, 13a, 18a, 20a) in line with a covering plate (14, 19) and to form electrical and mechanical connection means situated in a same plane.

Abstract: Encapsulated piezoelectric resonator including on the one hand a central plate (5) made of a piezoelectric material cut to form a frame (6) and a central resonant element (9) connected to said frame (6), the top and bottom faces having a metal coating, on the other hand bottom (11) and top (16) covers, each being formed by a spacing frame (12, 17) made of metal or a metal alloy and a closing plate (14, 19), characterized in that at least one of the elements (12, 14, 17, 19) forming the covers (11, 16) is electrically connected to the frame (6) of the central plate (5) and has an extension (10, 13, 18, 20) bent into a Z shape to bring its distal portion (10a, 13a, 18a, 20a) in line with a covering plate (14, 19) and to form electrical and mechanical connection means situated in a same plane.

Abstract: A device for preparing and applying labels and a method of operating said device is provided. The device includes three parts: a roller transport track, a label dispenser and a label manipulator. The latter can pick up a label deposited by the label dispenser on the roller transport track and stick it at a predetermined point onto an object arranged in any desired way in a three-dimensional space.